Telegraph sending-machine



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TELEGRAFI!y SENDING MACHINE. Aprucnlon man mm2. ma.

1,304,025. I Patented May 20,1919.

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UNITED STATES PATENT oFiuoE.

WILLIAM C. COZAD, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF T0 ARTHUR T. MOLONEY, OF CHICAGO, ILLINOIS.

TELEGRAPI-I SENDING-MACHINE.

Specification of Letters Patent.

Patented May 20, 1919.

Application 1ed February 12, 1918. Serial No. 216,702.

To all whom it may concern Be it lmown that I, WILLIAM C. CozAD, a citizen Aof the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Telegraph Sending-Machines, of which the following is a specification.

This invention relates to telegraph sending instruments having a vibrating element for producing a plurality of dot or dash impulses through the line, and the object of the invention is to provide a novel and improved contact for the vibrating element designed to eliminate indistinctness in the message at the receiving end of the line.

The object stated is attained by means of a combination and arrangement of parts to fbe hereinafter described and claimed, and in order that the same may be better understood, reference is had to the accompanying drawing, forming a part of this specication.

In the drawing,

Figure 1 is a perspective view of a fragment of the instrument showing the applic-ation of the invention, and

Fig. 2 is an enlarged section on the line 2 2.

Referring specilically to the drawing 5 denotes the base of the instrument above which is located a horizontally vibratory opposite the vibratory contact block 9 and is v engageable thereby when said block swings back and forthl as the rod 6 vibrates, whereby the circuit is made and broken. The cir-v stationary contact member 15 is yieldable Y when struck by the former. vAs usually constructed, the vibrating member carries a yieldable contact and the stationary contact is rigid.` With this structure a lag is very often experienced, causing the dot and dash impulses to blend and to appear indistinct and unintelligible at the receiving end of the line. However by the present arrangement of a yielda'ble stationary contact on a rigid support, and opposite a rigid vibratory contact, no lag is experienced-and the impulses are clear and distinct.

The device is very simple and inexpensive and can be applied to existing instruments without any changes or alterations, it being necessary only to Iit the screw 13 with the parts 14, 15 and 16.v

I claim:

In a telegraph sending machine, a vibratory member having a rigid contact, a contact engageable by said rigid contact, a support, a screw carried by the support, a spring carried by the screw and projecting therefrom, the second-mentioned contact being carried by the outer end of the spring and a sleeve carried by the screw and housing the spring, the last-mentioned contact projecting from the sleeve.

In testimony whereof I aiiix my signature.

WILLIAM C. COZAD.

Copie: of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

' Washington, D. G. 

